alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/BUGHATCH SpawnAgent Request (GET) M1"; flow:to_server,established; urilen:12; http.method; content:"GET"; http.uri; content:"/Agent64.bin"; fast_pattern; http.user_agent; content:"Mozilla|2f|"; startswith; http.host; pcre:"/^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$/"; pcre:"/^(4|5)\.0$/R"; reference:url,businessinsights.bitdefender.com/technical-advisory-proxyhell-exploit-chains-in-the-wild; reference:url,elastic.co/security-labs/bughatch-malware-analysis; classtype:trojan-activity; sid:2044387; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_02_28, deployment Perimeter, deployment SSLDecrypt, malware_family Win32_BUGHATCH, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_02_28;)